The radioactive source transfer unit employs a high-activity
miniature iridium-192 seed attached to the end of a steel
wire to deliver the radiation treatment under computer
control. In this way, the position of the source within the
patient's body and the length of time it remains can be
accurately controlled.
Applicators for cancer of the cervix and breast
Various devices, or applicators, are used to provide access for the radiation source into the area to be
treated within a human body. Different applicator designs are available for treatment of tumours or
other lesions located at different areas of the body. The applicators are placed within the patient (who
is anesthetised if necessary, depending on the site to be treated). To prepare for the treatment, non-
radioactive markers are placed inside each applicator, and X ray films are taken to visualise the actual
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